NiteCapX claims it is the all natural herbal Viagra solution to erectile dysfunction. This male enhancement capsule is made of Samoan Kava, Panex Ginseng, Ginko Biloba, Peruvian Maca Root, Sea Cucumber extracts, Yohimbe, Horny Goat Weed, and capsicum. It does contain Yohimbe which has a number of side effects that can happen after taking large or regular dosages so you need to be very careful with this product. A 2006 study found that toxic side effects from products containing yohimbe were the most common cause of all supplement related calls to poison control centers. They say the ingredients pack a powerful punch more than other sexual enhancement products. NiteCapX herbal supplement should start working after 30-60 minutes prior to sexual activity and lasts for up to 36 hours.